Controller unit



FIG. 1 is a perspective view of a controller unit;

FIG. 2 is a front view of the controller unit;

FIG. 3 is a rear view of the controller unit;

FIG. 4 is a top view of the controller unit;

FIG. 5 is a bottom view of the controller unit;

FIG. 6 is a left side view of the controller unit; and,

FIG. 7 is right side view of the controller unit.

The broken lines are used to show portions of the controller unit that do not form part of the claimed design. 

The ornamental design for a controller unit, as shown and described. 